The characterisation of plant extracts is long and complex task. It usually reduced to the identification of several major compounds. Nevertheless, a deeper knowledge of the content of extracts is often necessary. GAINS (Greenpharma Automated Identification of Natural Structures) is a metabolomic tool developed by Greenpharma. It aims at obtaining structural information on all detectable compounds of a natural extract. Therefore it is possible to propose an identification of a large number of present compounds and open new development avenues.